Wrench.



PATENTED AUG. 7, 1906.

F. EVANS.

WRENCH.

APPLICATION rum) APB.6, 190a.

UNITED srnirns FRANK EVANS, OF PRIOEDALE, PENNSYLVANIA,ASSIGNOR OF ONE-HALF ra'rnn'rorrIo TO WILLIAM E. JENKINS, OF MONESSEN, PENNSYLVANIA.

WRENCH.

Specification of Letters Patent.

Patented Aug. 7, 1906.

Application filed pril 6. 1906. Serial No. 310,381.

To all whom it mag concern.

Be it known that I, FRANK EVANS, a citizen of the United States of America, residing atPricedale, in the county of Westmoreland sive to manufacture, an

and State of Pennsylvania, have invented certainnew and "useful Improvements in Wrenches, of which the-following is a specification, reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements in wrenches; and the invention relates more particularly to that, known as a type of wrench commonly monkey-wrench. v

The primary object of this invention is the provision of novel means in connection with a wrench for easily and quickly adjusting the movable jaw thereof, sald means being actuatedby an oscillatory movement instead of the. ordinary rotary movement. heretofore employed for adjusting the movable jaw of the wrench. To this end I have devised a novel wrench which can be easily and quickly manipulated, not necessitating the. operator in removing his hand from the handle of the wrench when it is desired to adjust the movable jawthereof.

The invention further aims to provide a simple and inexpensive wrench which will be strong and durable, comfaratively inexpenhighly efficient for thev urposes for which it is use ,ith' the above and other objects in view, which will more readily appear as the nature of the invention is better understood, the same consistsin the novel construction, combination, and arrangement of parts to be hereinafter more fully described and claimed,

and; referring to the drawings accompanying said head being normally fixed upon the shank 1 and only removed when it is, desired to remove an adjustable jaw 3' from the shank 1 of the Wrench. The lower-end of the shank 1 is-provided with a rectangular housing 4, carrying an extension 5. j The adjustable jaw 3, which is slidahly mounted upon the shank 1, is rovided with a screw-threaded bore 7, an engaging in said bore is a screw 8, the lower end of which is revolubly mounted in the extension 5 of the shank 1 and provided with a horizontally-disposed pinion 9.

In the housing 4 is journaled a verticallydisposed shaft 10, and upon said shaft within the housing 4 is mounted a toothed wheel 6 and a large pinion 11, said pinion meshing with the pinion 9 and being approximately two-thirds larger than said pinion, whereby when the pinion 11 is rotated a third of a revolution the pinion 9 will make a complete revolution. The shaft 10 extends downwardly within 'a depending handle 12, carried by the housing 4, said shaft having its lower end provided with a inion 15, the object of which will be present y described.

In the extension 5 of the shank 1 is pivotally mounted, as at 16, a curved actuatinglever 17, the lower end of said lever being provided with an outwardlyeextending rack 18, adapted to mesh with the ini'on15,carried by the lower end of the s raft 10. The

actuating-lever is provided with a spring 19,

adapted to engage in arecess 20, formed in the handle 12, and normally hold said actusiting-lever in the position shown in Figs. 1 and 3, of the drawings. To protect the rack 18 and the pinion 15, the lower end of the handle 12 is provided with a casing 21,-which houses the pinion and the rack and prevents said pinion and rack from beingbroke'n when the wrench is roughly handled. The rear side of the housing 4 is provided with a spring-held awl, said pawl normally engag.-

ing the toot 'ed wheel 6 and preventing the same from rotating until it is. moved out of engagement with said wheel.

To operate myimproved wrench,it is only necessary that the actuating-lever 17 be os-' cillated, which through the mediumof the rack 18, shaft 10, pinion 11, and lpinion 9, and screw 8 will move the adjusta le jaw 3 upon the shank 1, the relation of one pinion-r to another, together with the pitch of the threads upon the screw 8 determining the amount of adjustment of the jaw 3 accomplished by oscillating the actuating-lever 17.

From the foregoing description'it will-be observed that I have devised a novel and unique form of wrench which can be easily and quickly adjusted without an operator removing his hand from the handle 12 of the wrench. The entire wrench is preferably constructed of strong and durable metal,- -Whereby it will withstand the rough usage to which it is subjected.

Such changes as are permissible by the appended claims .may be resorted to without departing from the spirit and scope of the invention.

What I claim, and desire to secure by Letters Patent, is 1 1. A wrench of the character described consisting of a shank, a detachable head carried by said shank, a housing carried by the lower end of said shank, a dependinghandle carried by'said housing, an extension. carried by said housing, a jaw slidably mounted upon said shank andhaving a screw-threaded bore formed therein, a screw revolubly mounted upon said extension and extending into said bore, an actuating-ii ver pivotally connected to said extension, means actuated by the oscillation of said lever to-revolve said screw, and means to lock the last -named means in a fixed position, substantially as described.

2. A wrench of the character described consisting of a shank having a head, a jaw slidably mountedupon said shank, a screw operating in, said shank, an actuating-lever pivotally supported by said shank, means actuated b the oscillation of said lever to revolve sai screw,said means consisting of a shaft, meshing pinions, a pinion and rack,

sui: stantially as described.

3. A wrench of the character described FRANK EVANS.

Witnesses: H

E. E. POTTER, M. E. WHITE. 

